Accelerator research

Accelerator research

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Caption: Accelerator research, cavities are incerted into a cryounit. An accelerator uses electrons at high speeds to study smaller components of atoms called quarks. Cavities made from the element niobium are used to place positive and negative charges around electrons. A refrigeration container called a cryounit encases liquid helium around a pair of cavities keeping them superconductive. In superconductivity, certain substances lose resistance to the flow of an electric current. The use of superconductive niobium cavities allows the accelerator to provide a continuous beam of electrons to the experiments. Jefferson Lab's accelerator uses 338 cavities. Photographed at Jefferson Lab at Newport News, Virginia.

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